7 CFR § 51.1561 - Serious damage.
§ 51.1561 Serious damage.
“Serious damage” means any defect, or any combination of defects, which seriously detracts from the edible or marketing quality, or the internal or external appearance of the potato, or any external defect which cannot be removed without a loss of more than 10 percent of the total weight of the potato. See Tables III, IV, V and VI in § 51.1564 and Table VII in 5§ 1.1565.
[76 FR 31789, June 2, 2011]